The only API that had the features I needed (Recall.ai), charges $1000 / month minimum, so I decided to build my own. We're now processing thousands of hours of meetings each month and it works reliably. We also have a few features that let the bot interact with people in the meeting, in addition to recording it.

Recall is pretty good, but it’s clearly the number one out there and is kind of “taking advantage” of that

I’ve noticed some other APIs popping up that aren’t open source but are more affordable and reliable, like Skribby (meeting bot API) and MeetingBaaS.